Dyfyniad APA

Austoker, J., & Hewitson, P. (2008). Screening for colorectal cancer. BMJ Publishing Group.

Dyfyniad Arddull Chicago

Austoker, J., and P. Hewitson. Screening for Colorectal Cancer. BMJ Publishing Group, 2008.

Dyfyniad MLA

Austoker, J., and P. Hewitson. Screening for Colorectal Cancer. BMJ Publishing Group, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.